Material blocking prevention device

The utility model discloses an anti-jamming device, which relates to the technical field of concrete, and comprises a box body, a blanking mechanism is mounted in the box body, the blanking mechanism comprises a first hopper fixed in the box body, a discharge pipe is mounted at the bottom of the first hopper, the discharge pipe penetrates through the box body, and the first hopper is fixed in the box body. Fixing plates are installed in the first hopper, and a first shell is installed between the two fixing plates. Compared with the prior art, concrete raw materials are crushed through the crushing mechanism and the disturbance mechanism, caked raw materials are prevented from being mixed into the first hopper, so that the concrete processing quality is improved, material blocking between the crushing mechanism and the discharging mechanism is avoided through the arrangement of the disturbance mechanism, use is very convenient, and the practicability is high. And meanwhile, the discharging mechanism is adopte